How To Fix SDBALM079 - Maximum usage of the heap in KB

SAP Error Message - Details

• Message type: E = Error

• Message class: SDBALM - SAP DB and liveCache Alert Monitoring

• Message number: 079

• Message text: Maximum usage of the heap in KB

Data Collector
<ZH>Collector B</>
(RZ20 -> SAP CCMS Technical Experts Monitors -> All Monitoring Contexts
,,-> <Name of the database connection> -> Collectors and Internals
-> Collectors -> Collector B)

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Preset runtime interval of Collector B: 15 minutes

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDBALM079 - Maximum usage of the heap in KB ?

  The SAP error message SDBALM079 indicates that the maximum usage of the heap memory in kilobytes (KB) has been reached. This typically occurs in the context of database operations, particularly when the database is unable to allocate more memory for processing due to limits set on the heap size.
  Cause:
  
  
  Heap Memory Limit: The error is often caused by exceeding the configured maximum heap size for the database or application server. This can happen due to:
  
  Large data processing tasks.
  Inefficient queries or operations that consume excessive memory.
  Insufficient memory allocation settings in the database or application server configuration.
  
  
  
  Memory Leaks: There may be memory leaks in the application or database processes that lead to increased memory consumption over time.
  
  
  Configuration Issues: The configuration settings for the database or application server may not be optimized for the workload, leading to memory exhaustion.
  
  
  Solution:
  
  
  Increase Heap Size:
  
  Review and increase the maximum heap size settings in the database or application server configuration. This can often be done in the instance profile or database configuration files.
  For example, in an SAP system, you can adjust parameters like abap/heap_area_dia and abap/heap_area_nondia in the instance profile.
  
  
  
  Optimize Queries:
  
  Analyze and optimize any SQL queries or ABAP programs that are consuming excessive memory. Use transaction codes like ST05 (SQL Trace) or SE30 (Runtime Analysis) to identify performance bottlenecks.
  
  
  
  Monitor Memory Usage:
  
  Use monitoring tools to keep track of memory usage over time. This can help identify trends and potential memory leaks.
  
  
  
  Database Maintenance:
  
  Perform regular database maintenance tasks such as updating statistics, reorganizing tables, and cleaning up unnecessary data to improve performance and reduce memory usage.
  
  
  
  Check for Memory Leaks:
  
  Investigate the application code for potential memory leaks. This may involve reviewing custom ABAP code or third-party add-ons.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Related Information:
  
  Transaction Codes: Use transaction codes like ST02 (Tune Summary) and SM50 (Process Overview) to monitor memory usage and identify processes that are consuming excessive resources.
  SAP Documentation: Refer to SAP Help documentation for guidelines on memory management and configuration settings.
  Performance Tuning: Consider engaging with SAP Basis or performance tuning experts if the issue persists after initial troubleshooting.
  
  By following these steps, you should be able to address the SDBALM079 error and optimize memory usage in your SAP environment.